JP2003212612A - Double-glazed unit and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-glazed unit which can suppress Appearance of dew condensation even when there is large temperature difference between both surfaces of the double-glazed unit and which can hold airtightness of a clearance part between both glass plates and to provide its manufacturing method. <P>SOLUTION: In the method for manufacturing the double-glazed unit P, a rugged surface 1a of figured glass 1 is disposed to face a surface of float glass sheet 2 and both glass plates 1, 2 are arranged via a clearance part V in a thickness direction thereof and peripheral parts of both glass plates 1, 2 are bonded by a spacer 3S along peripheral parts of the both glass plates 1, 2 to hermetically seal the clearance part V. Further whole spacer 3S is formed of a resin and when cross-sectionally viewed in a direction orthogonally crossing a longitudinal direction of the resin spaces 3S, joining width a to the figured glass 1 is larger than joining width b to the float glass sheet 2. An uncured resin for the spacer is fed and applied onto the rugged surface 1a of the figured glass 1 and then the surface of the float glass sheet 2 is pressed thereto to join peripheral parts of both glass plates 1, 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a concavo-convex surface of a template glass that faces the surface of a float glass, and is arranged in the thickness direction of both glass sheets with a gap between them to extend along the peripheral edge of both glass sheets. The present invention relates to a multi-layer glass in which peripheral portions of the both glass plates are joined by a spacer to hermetically seal the gap portion, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Since such double glazing has excellent heat insulating properties, it has been widely used in recent years in windows of buildings and the like, and in the past, spacers for joining the peripheral portions of both glass sheets are made of so-called metal. Was composed of spacers. Specifically, as shown in FIG. 6, the concavo-convex surface 1a of the template glass 1 faces the surface of the float plate glass 2, and the spacer 10 made of aluminum is placed between the peripheral portions of the plate glasses 1 and 2, and The spacer 10 made of aluminum and the both glass plates 1 and 2 are joined by a thermoplastic resin 11, and another thermoplastic resin 12 is filled on the outer side of the spacer 10 in a direction orthogonal to the longitudinal direction of the spacer 10 made of aluminum. In the sectional view, the joining width a ′ of the aluminum spacer 10 to the template glass 1 and the joining width b ′ to the float glass sheet 2 via the thermoplastic resin 11 are configured to have substantially the same width.

[0003]

In this conventional double glazing, since the spacer 10 is made of aluminum, the spacer 10 made of aluminum and the both glass plates 1 and 2 are made of the thermoplastic resin 11.
When the two glass plates 1 and 2 are strongly pressed against each other at the time of joining, the two glass plates 1 and 2 can be firmly pressed and bonded to each other because a predetermined space is maintained between the two glass plates 1 and 2. Become. Therefore, the bonding between the two glass plates 1 and 2 via the aluminum spacer 10 is ensured by the strong pressing force, and the airtightness of the gap V between the two glass plates 1 and 2 is surely maintained. There was a problem with heat conduction through 10. That is, since the spacer 10 is made of metal aluminum and has high thermal conductivity, if there is a temperature difference between the indoor side and the outdoor side of the double-glazing unit, the thermal conductivity via the aluminum spacer 10 causes the double-layer glass to have a high thermal conductivity. There is a problem that dew condensation occurs on the laminated glass, and especially when such a double-glazing is used in a cold region, there is a drawback that dew condensation becomes remarkable due to a large temperature difference between the indoor side and the outdoor side. there were.

The present invention focuses on such a conventional defect, and an object thereof is to suppress the occurrence of dew condensation as much as possible even if there is a large temperature difference between both surfaces of the double-glazing unit. Moreover, it is an object of the present invention to provide a double glazing which can maintain the airtightness of the gap between both glass sheets as desired and a method for producing the same.

[0005]

[Structure] As a characteristic structure of the invention of claim 1, as shown in FIG. 2, FIG. 4 and FIG. 5, the uneven surface 1a of the template glass 1 is made into a float plate glass 2
Of the two glass sheets 1 and 2, and the two glass sheets 1 and 2 are arranged with a gap V in the thickness direction of the two glass sheets 1 and 2, and the spacers 3S along the peripheral portions of the glass sheets 1 and 2 provide a peripheral edge portion of the glass sheets 1 and 2. Is a multi-layered glass P in which the gap V is hermetically sealed by joining the spacers 3S in a direction orthogonal to the longitudinal direction of the spacer 3S made of resin. In cross-section, the resin spacer 3S
The bonding width a with respect to the template glass 1 is larger than the bonding width b with respect to the float glass sheet 2.

A second aspect of the invention is characterized in that, as illustrated in FIGS. 2, 4, and 5, the float plate glass 2 is a low-emission plate glass having a reflective film 2a on its surface. It is in.

The characteristic constitution of the invention of claim 3 is, as illustrated in FIGS. 2, 4 and 5, the reflection film 2a.
Is provided on the surface of the float plate glass 2 on the gap V side.

As shown in FIG. 2, FIG. 4, and FIG. 5, the characteristic constitution of the invention of claim 4 is that the resin sealing material 4 for sealing between the both glass plates 1, 2 is the both glass plates 1, 2. The space between the two is filled outside the resin spacer 3S.

The characteristic configuration of the invention of claim 5 is, as illustrated in FIG. 2 and FIG. 3, any one of claims 1 to 4.
Item 4. The method for producing a double-layered glass according to item 1, wherein the uncured spacer resin 3 is supplied and applied to the uneven surface 1a of the template glass 1, and then the uncured spacer is applied and applied to the template glass 1. The surface of the float plate glass 2 is pressed against the resin 3, and the peripheral portions of the template glass 1 and the float plate glass 2 are joined together by a resin spacer 3S formed by curing the resin 3 for spacers.

The sixth aspect of the invention is characterized in that the spacer resin 3 is a thermoplastic resin as shown in FIG.

As described above, the reference numerals are given for the sake of convenience in comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings due to the entry.

[Operations and Effects] According to the characterizing feature of the invention of claim 1, the entire spacer for joining the peripheral portions of the template glass and the float glass to hermetically seal the gap between the glass sheets is made of resin. Since it is formed, compared to the conventional spacer made of aluminum, the heat conduction between the double-sided glass by the spacer is surely reduced, thus suppressing the occurrence of dew condensation on the double-sided glass. You can However, when the spacer is made of resin, it is impossible to strongly press the two glass plates to each other in order to secure a predetermined space between the two glass plates when manufacturing the double glazing. On the surface,
Bubbles are trapped between the uneven surface and the resin spacer, so that it is difficult to secure a necessary contact area, and there is a possibility that bonding with the resin spacer may not be reliably performed.

However, according to the present invention, in the cross-sectional view of the resin spacer in a direction orthogonal to the longitudinal direction, the bonding width of the resin spacer to the template glass is larger than the bonding width to the float glass. Therefore, by setting the bonding width on the float plate glass side that has good bonding properties to the resin spacer and making the bonding width on the template glass side larger than the bonding width on the float plate glass side, the float plate glass Even in the case of the template glass which is inferior in joining property to the above, it is possible to secure a necessary contact area due to its large joining width, so that the joining with the resin spacer can be ensured. Therefore, even if the entire spacer is made of resin, the resin spacer can be reliably bonded to both glass plates, and as a result, even if there is a large temperature difference on both sides of the double glazing, the double glazing It is possible to reliably suppress the occurrence of dew condensation on the glass plate, and moreover, it is possible to keep the gap between the two glass plates airtight as desired.

According to the feature of the invention of claim 2, since the float plate glass constituting the double glazing is a low radiating plate glass having a reflecting film on its surface, in addition to the heat insulating effect of the double glazing itself. In addition, the heat-insulating effect of the low-radiation plate glass can be expected, further improving the overall heat-insulating effect.
The effect of suppressing the above-mentioned dew condensation becomes more remarkable.

According to the characterizing feature of the invention of claim 3, since the reflecting film is provided on the surface of the float plate glass on the side of the gap, peeling of the reflecting film due to the use of the double glazing is suppressed, The insulation effect is maintained over many years.

According to the characterizing feature of the invention of claim 4, the resin sealing material for sealing between the both glass plates is filled outside the resin spacer between the both glass plates.
Since both the spacer and the sealing material are made of resin,
The joint between the two is also good, and the resin sealing material contributes to maintaining the airtightness of the gap between the two glass plates, and the cooperation of the resin spacer and the resin sealing material enables more reliable airtightness. .

According to a fifth aspect of the present invention, there is provided the method for producing a double glazing according to any one of the first to fourth aspects, in which the uncured spacer is first formed on the uneven surface of the template glass. Since the resin for supply is applied and applied, for example, the uncured spacer resin is strongly pressed against the uneven surface of the template glass at the time of the supply and application, or the viscosity of the spacer resin is reduced and then applied and applied. By taking various measures, it is possible to secure the contact area of the spacer resin with the uneven surface. In addition, as described above, since the joint width of the resin spacer to the uneven surface of the template glass is relatively large, the contact width of the spacer resin also naturally increases, and the spacer for the spacer required for the uneven surface of the template glass. The contact area of the resin can be reliably ensured. Then, after the necessary contact area is secured to the uneven surface of the template glass, the surface of the float glass sheet having good bonding property is pressed against the uncured spacer resin, and the spacer resin is formed by curing. Since the resin glass spacers join the peripheral edges of the template glass and the float glass, when pressing the float glass, the peripheral edges of the glass panes are securely bonded together without the need for a strong pressing force, and there is a gap between the glass panes. The parts can be kept airtight as desired.

According to the sixth aspect of the invention, since the spacer resin is a thermoplastic resin, the thermoplastic resin in a heated state is supplied and applied to the uneven surface of the template glass, and then the surface of the float plate glass is coated. If you press and wait for cooling,
The peripheral portion of the mold plate glass and the float plate glass is reliably bonded by the resin spacer formed by curing the thermoplastic resin, in which case, as described above, first,
Since the thermoplastic resin is supplied and applied to the uneven surface of the template glass, it is possible to secure the contact area of the thermoplastic resin with the template glass. In other words, when the thermoplastic resin is first supplied and applied to the surface of the float glass sheet, the temperature of the thermoplastic resin decreases due to contact with the float glass sheet, or the temperature of the thermoplastic resin decreases over time and the viscosity becomes Although the temperature may increase, the thermoplastic resin is first applied and applied to the uneven surface of the template glass, so that the thermoplastic resin is applied and applied to the template glass in a relatively high temperature and low viscosity state. Therefore, the necessary contact area of the thermoplastic resin for the spacer with respect to the concavo-convex surface of the template glass is securely ensured and cured in that state, so the peripheral edges of both plate glasses are reliably joined by the thermoplastic resin spacer. Thus, the gap between both plate glasses can be kept airtight.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the double glazing and the method for producing the same according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the multilayer glass P is a pair of plate glasses 1 and 2 composed of, for example, a rectangular template glass 1 and a transparent rectangular float glass sheet 2, in which the uneven surface 1a of the template glass 1 is floated. In a state of facing the surface of the plate glass 2, the plate glasses 1 and 2 are arranged in the thickness direction with a gap V in between, and the rectangular peripheral portions of the plate glasses 1 and 2 are resin spacers 3S made of a thermoplastic resin. Are joined together by. Float plate glass 2 is generally "L
A low-emission glass called "ow-E glass", in which the transparent metal film 2a as a reflection film for reflecting far infrared rays is
It is provided on the surface on the gap V side.

As shown in FIG. 3, the resin spacer 3S is formed by curing a thermoplastic resin 3 as a spacer resin, and the thermoplastic resin 3 is, for example, polyisobutylene kneaded with a desiccant. In order to join the peripheral portions of the two glass plates 1 and 2 with the thermoplastic resin 3 to manufacture the multi-layer glass P, a resin supply device (not shown) provided with a nozzle 6 having an opening 5 for resin supply. Thus, the uncured thermoplastic resin 3 is continuously supplied and applied to the uneven surface 1a of the template glass 1. When the thermoplastic resin 3 is supplied and applied, since the temperature of the thermoplastic resin 3 is relatively high and the viscosity thereof is low, the thermoplastic resin 3 comes into contact with the concavo-convex surface 1a of the template glass 1 while ensuring a necessary contact area.

The opening 5 of the nozzle 6 is formed into a bell shape and has a length L at one end in the width direction.
a is configured to be longer than the length Lb of the other end, and when the thermoplastic resin 3 is applied, the length La side is positioned on the uneven surface 1a side of the template glass 1 and then applied. ,
The surface of the float plate glass 2 on the side of the metal film 2a is pressed against the thermoplastic resin 3 applied to the template glass 1 side to be cured. Thereby, the spacer 3S made entirely of resin is formed, and in the cross-sectional view in the direction orthogonal to the longitudinal direction of the resin spacer 3S, the bonding width a of the resin spacer 3S to the template glass 1 is the float. Plate glass 2
The plate glass 1 and 2 are joined to each other with a width larger than the joining width b with respect to, and the gap V filled with dry air is hermetically sealed. Then, the both glass plates 1 and 2
The double-walled glass P is manufactured by filling the resin-made sealing material 4 made of a thermoplastic resin such as polysulfide outside the resin-made spacers 3S between them.

That is, with reference to the surface of the float plate glass 2 having a better bondability than the uneven surface 1a of the template glass 1,
The resin spacer 3 for the surface of the float plate glass 2
The necessary bonding width b is set from the bonding force of S, and the template glass 1
The joining width a on the side is larger than the joining width b, and specifically, the necessary joining width a is set from the joining force of the resin spacer 3S to the concave-convex surface 1a of the template glass 1. Considering the pressing force between the two, the nozzle 6
By setting both lengths La and Lb in the opening portion 5 of the above, if the both glass plates 1 and 2 are pressed with a preset pressing force, the resin spacer 3S is reliably bonded to both glass plates 1 and 2. Becomes Therefore, although the entire spacer 3S is made of resin and both the glass plates 1 and 2 are pressed with a comparatively weak force, the bonding between the two glass plates 1 and 2 becomes reliable and the airtightness of the gap V is secured. It will be.

[Other Embodiment] (1) In the previous embodiment, an example in which the opening 5 of the nozzle 6 is formed into a bell shape is shown. However, the shape of the opening 5 may be changed as appropriate. When the resin spacer 3S formed by being supplied and applied from the opening 5 is viewed in a cross section in a direction orthogonal to the longitudinal direction thereof, for example, as shown in FIG.
The template glass 1 side is configured to bulge along the uneven surface 1a of the template glass 1 or, as shown in FIG. 5, a trapezoid in which the template glass 1 side is continuously narrowed to the float glass sheet 2 side. It can also be configured, and the bonding width a of the resin spacer 3S to the template glass 1 is such that the float plate glass 2
There is no particular limitation on the cross-sectional shape of the resin spacer 3S as long as it is a width larger than the joining width b with respect to. Also,
While the example of supplying and applying the thermoplastic resin 3 by the nozzle 6 to the uneven surface 1a of the template glass 1 has been shown, conversely, the thermoplastic resin 3 is applied to the surface of the float plate glass 2 on the side of the metal film 2a. It is also possible to supply and coat, and then press the uneven surface 1a of the template glass 1 to cure it.

(2) In the above embodiment, the resin spacer 3S is formed of polyisobutylene in which a desiccant is kneaded, but the desiccant is not indispensable and the desiccant can be eliminated. Can be carried out by
The resin spacer 3S can be formed of various thermoplastic resins other than polyisobutylene, and similarly, the resin seal material 4 can also be formed of various thermoplastic resins other than polysulfide.

(3) In the above embodiment, the float plate glass 2 constituting the double glazing P is made of the low-emission plate glass having the metal film 2a. However, the float plate glass 2 need not necessarily be made of the low-emission plate glass. It can also be made of ordinary float glass. Further, regarding the template glass 1 and the float glass sheet 2, an example using the rectangular template glass 1 and the transparent float glass sheet 2 has been shown, but the two glass sheets 1 and 2 do not necessarily have to be transparent, and the glass sheet 1, The shape of 2 is not limited to a rectangular shape, and various shapes such as a circle and a rhombus can be used. Further, as for the composition of both glass plates 1 and 2, soda silicate glass, soda lime glass, borosilicate glass, aluminosilicate glass, various crystallized glasses, and the like can be used. Window glass for objects and vehicles (cars, rail cars, ships), or
Starting with device elements such as plasma displays,
It can be used for various purposes such as doors and walls of various devices such as refrigerators and heat insulating devices.

[Brief description of drawings]

FIG. 1 is a perspective view of double glazing.

FIG. 2 is a cross-sectional view of a main part of double glazing

FIG. 3 is a perspective view showing a manufacturing process of double glazing.

FIG. 4 is a cross-sectional view of a main part according to another embodiment of double glazing.

FIG. 5 is a cross-sectional view of a main part according to another embodiment of double glazing.

FIG. 6 is a cross-sectional view of a main part of a conventional double-glazing structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Mold glass 1a Uneven surface of mold glass 2 Float glass 2a Reflective film 3 Thermoplastic resin as spacer resin 3S Resin spacer 4 Resin sealing material a Bond width of resin spacer to template glass Float glass of resin spacer Bonding width P to glass V

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yukio Yamada             3-6, Omagari Industrial Park, Kitahiroshima City, Hokkaido             3 Inside the North Sea Glass Service Co., Ltd. F-term (reference) 4G061 AA02 BA01 CA02 CB02 CB06                       CD02 CD22 DA09 DA10

Claims (6)

[Claims] 1. An uneven surface of the template glass is made to face the surface of the float glass, and the glass plates are arranged with a gap in the thickness direction of the glass plates, and spacers are provided along the peripheral edge of the glass plates to form the glass plates. A multi-layer glass in which peripheral portions are joined and the gap is hermetically sealed, wherein the entire spacer is formed of a resin, and a sectional view in a direction orthogonal to the longitudinal direction of the resin spacer. At
A multi-layer glass in which a bonding width of the resin spacer to the template glass is larger than a bonding width to the float glass sheet. 2. The double glazing according to claim 1, wherein the float glass plate is a low-emission glass plate having a reflective film on its surface. 3. The double glazing according to claim 2, wherein the reflective film is provided on a surface of the float plate glass on the side of the gap. 4. The double glazing according to any one of claims 1 to 3, wherein a resin sealing material that seals between the both glass plates is filled outside the resin spacer between the both glass plates. . 5. The method for producing a double glazing according to any one of claims 1 to 4, wherein an uncured spacer resin is applied and applied to the uneven surface of the template glass, and then the template is used. It is manufactured by pressing the surface of the float plate glass against the uncured spacer resin applied and applied to the plate glass, and joining the peripheral portions of the template plate glass and the float plate glass by the resin spacer formed by curing the spacer resin. Method for producing double glazing. 6. The method for producing a double glazing according to claim 5, wherein the spacer resin is a thermoplastic resin.